diff --git a/crates/goose-cli/src/cli.rs b/crates/goose-cli/src/cli.rs
index ec6227da..0d9396bf 100644
--- a/crates/goose-cli/src/cli.rs
+++ b/crates/goose-cli/src/cli.rs
@@ -14,6 +14,7 @@ use goose_mcp::{AutoVisualiserRouter, ComputerControllerServer, MemoryServer, Tu
 use crate::commands::configure::configure_telemetry_consent_dialog;
 use crate::commands::configure::handle_configure;
 use crate::commands::info::handle_info;
+use crate::commands::plugin::handle_plugin_install;
 use crate::commands::project::{handle_project_default, handle_projects_interactive};
 use crate::commands::recipe::{handle_deeplink, handle_list, handle_open, handle_validate};
 use crate::commands::term::{
@@ -643,6 +644,16 @@ enum GatewayCommand {
     },
 }
 
+#[derive(Subcommand)]
+enum PluginCommand {
+    /// Install a plugin from a git repository URL
+    #[command(about = "Install a plugin from a git repository URL")]
+    Install {
+        #[arg(help = "URL to a git repository containing a supported plugin")]
+        url: String,
+    },
+}
+
 #[derive(Subcommand)]
 enum RecipeCommand {
     /// Validate a recipe file
@@ -854,6 +865,13 @@ enum Command {
         command: RecipeCommand,
     },
 
+    /// Manage plugins
+    #[command(about = "Manage plugins")]
+    Plugin {
+        #[command(subcommand)]
+        command: PluginCommand,
+    },
+
     /// Manage scheduled jobs
     #[command(about = "Manage scheduled jobs", visible_alias = "sched")]
     Schedule {
@@ -1056,6 +1074,7 @@ fn get_command_name(command: &Option<Command>) -> &'static str {
         Some(Command::Schedule { .. }) => "schedule",
         Some(Command::Update { .. }) => "update",
         Some(Command::Recipe { .. }) => "recipe",
+        Some(Command::Plugin { .. }) => "plugin",
         Some(Command::Term { .. }) => "term",
         #[cfg(feature = "local-inference")]
         Some(Command::LocalModels { .. }) => "local-models",
@@ -1529,6 +1548,12 @@ async fn handle_schedule_command(command: SchedulerCommand) -> Result<()> {
     }
 }
 
+fn handle_plugin_subcommand(command: PluginCommand) -> Result<()> {
+    match command {
+        PluginCommand::Install { url } => handle_plugin_install(&url),
+    }
+}
+
 fn handle_recipe_subcommand(command: RecipeCommand) -> Result<()> {
     match command {
         RecipeCommand::Validate { recipe_name } => handle_validate(&recipe_name),
@@ -1857,6 +1882,7 @@ pub async fn cli() -> anyhow::Result<()> {
             Ok(())
         }
         Some(Command::Recipe { command }) => handle_recipe_subcommand(command),
+        Some(Command::Plugin { command }) => handle_plugin_subcommand(command),
         Some(Command::Term { command }) => handle_term_subcommand(command).await,
         #[cfg(feature = "local-inference")]
         Some(Command::LocalModels { command }) => handle_local_models_command(command).await,
diff --git a/crates/goose-cli/src/commands/mod.rs b/crates/goose-cli/src/commands/mod.rs
index 6622f4d9..3dee8b63 100644
--- a/crates/goose-cli/src/commands/mod.rs
+++ b/crates/goose-cli/src/commands/mod.rs
@@ -2,6 +2,7 @@ pub mod configure;
 pub mod doctor;
 pub mod gateway;
 pub mod info;
+pub mod plugin;
 pub mod project;
 pub mod recipe;
 pub mod schedule;
diff --git a/crates/goose-cli/src/commands/plugin.rs b/crates/goose-cli/src/commands/plugin.rs
new file mode 100644
index 00000000..4da18bbf
--- /dev/null
+++ b/crates/goose-cli/src/commands/plugin.rs
@@ -0,0 +1,27 @@
+use anyhow::Result;
+use console::style;
+
+pub fn handle_plugin_install(url: &str) -> Result<()> {
+    let install = goose::plugins::install_plugin(url)?;
+
+    println!(
+        "{} Installed {} plugin '{}' ({})",
+        style("✓").green(),
+        install.format,
+        style(&install.name).bold(),
+        install.version
+    );
+    println!("  Source: {}", install.source);
+    println!("  Location: {}", install.directory.display());
+
+    if install.skills.is_empty() {
+        println!("  No skills imported.");
+    } else {
+        println!("  Imported skills:");
+        for skill in install.skills {
+            println!("    - {}", skill.name);
+        }
+    }
+
+    Ok(())
+}
diff --git a/crates/goose/Cargo.toml b/crates/goose/Cargo.toml
index 7f5c5ace..de2aaaa8 100644
--- a/crates/goose/Cargo.toml
+++ b/crates/goose/Cargo.toml
@@ -142,7 +142,7 @@ jsonwebtoken = { version = "10.3.0", default-features = false, features = ["use_
 blake3 = "1.8"
 fs2 = { workspace = true }
 tokio-stream = { workspace = true, features = ["io-util"] }
-tempfile = { workspace = true }
+tempfile.workspace = true
 dashmap = "6.1"
 ahash = "0.8"
 tokio-util = { workspace = true, features = ["compat"] }
diff --git a/crates/goose/src/lib.rs b/crates/goose/src/lib.rs
index ab64d11c..98e6c051 100644
--- a/crates/goose/src/lib.rs
+++ b/crates/goose/src/lib.rs
@@ -27,6 +27,7 @@ pub mod oauth;
 #[cfg(feature = "otel")]
 pub mod otel;
 pub mod permission;
+pub mod plugins;
 #[cfg(feature = "telemetry")]
 pub mod posthog;
 pub mod prompt_template;
diff --git a/crates/goose/src/plugins/formats/gemini.rs b/crates/goose/src/plugins/formats/gemini.rs
new file mode 100644
index 00000000..148de55e
--- /dev/null
+++ b/crates/goose/src/plugins/formats/gemini.rs
@@ -0,0 +1,191 @@
+use crate::plugins::{
+    copy_dir_all, plugin_install_dir, write_install_metadata, FormatNotSupported, ImportedSkill,
+    PluginFormat, PluginInstall,
+};
+use anyhow::{bail, Context, Result};
+use fs_err as fs;
+use serde::Deserialize;
+use std::path::{Path, PathBuf};
+
+pub(super) const MANIFEST: &str = "gemini-extension.json";
+
+#[derive(Debug, Deserialize)]
+struct GeminiManifest {
+    name: String,
+    version: String,
+}
+
+struct SkillCandidate {
+    name: String,
+    relative_directory: PathBuf,
+}
+
+pub fn try_install_from_manifest(source: &str, checkout_dir: &Path) -> Result<PluginInstall> {
+    install_from_manifest(source, checkout_dir, &plugin_install_dir())
+}
+
+fn install_from_manifest(
+    source: &str,
+    checkout_dir: &Path,
+    install_root: &Path,
+) -> Result<PluginInstall> {
+    let manifest_path = checkout_dir.join(MANIFEST);
+    if !manifest_path.is_file() {
+        return Err(FormatNotSupported.into());
+    }
+
+    let manifest: GeminiManifest = serde_json::from_str(&fs::read_to_string(&manifest_path)?)
+        .with_context(|| format!("Failed to parse {}", manifest_path.display()))?;
+
+    validate_extension_name(&manifest.name)?;
+
+    fs::create_dir_all(install_root)?;
+    let destination = install_root.join(&manifest.name);
+    if destination.exists() {
+        bail!(
+            "Plugin '{}' is already installed at {}",
+            manifest.name,
+            destination.display()
+        );
+    }
+
+    let skills = find_skills(checkout_dir)?;
+    if skills.is_empty() {
+        bail!(
+            "Plugin '{}' does not contain any Gemini skills",
+            manifest.name
+        );
+    }
+
+    copy_dir_all(checkout_dir, &destination)?;
+    write_install_metadata(&destination, source, "gemini")?;
+
+    Ok(PluginInstall {
+        name: manifest.name,
+        version: manifest.version,
+        format: PluginFormat::Gemini,
+        source: source.to_string(),
+        directory: destination.clone(),
+        skills: skills
+            .into_iter()
+            .map(|skill| ImportedSkill {
+                name: skill.name,
+                directory: destination.join(skill.relative_directory),
+            })
+            .collect(),
+    })
+}
+
+fn validate_extension_name(name: &str) -> Result<()> {
+    if name.is_empty() {
+        bail!("Gemini extension name must not be empty");
+    }
+
+    if !name
+        .chars()
+        .all(|ch| ch.is_ascii_alphanumeric() || ch == '-')
+    {
+        bail!(
+            "Invalid Gemini extension name '{}'. Names may only contain letters, numbers, and dashes",
+            name
+        );
+    }
+
+    Ok(())
+}
+
+fn find_skills(extension_dir: &Path) -> Result<Vec<SkillCandidate>> {
+    let skills_dir = extension_dir.join("skills");
+    if !skills_dir.is_dir() {
+        return Ok(Vec::new());
+    }
+
+    let mut skills = Vec::new();
+    collect_skill_candidate(extension_dir, &skills_dir, &mut skills)?;
+
+    for entry in fs::read_dir(&skills_dir)? {
+        let entry = entry?;
+        let path = entry.path();
+        if path.is_dir() {
+            collect_skill_candidate(extension_dir, &path, &mut skills)?;
+        }
+    }
+
+    skills.sort_by(|a, b| a.name.cmp(&b.name));
+    Ok(skills)
+}
+
+fn collect_skill_candidate(
+    extension_dir: &Path,
+    skill_dir: &Path,
+    skills: &mut Vec<SkillCandidate>,
+) -> Result<()> {
+    let skill_file = skill_dir.join("SKILL.md");
+    if !skill_file.is_file() {
+        return Ok(());
+    }
+
+    let raw = fs::read_to_string(&skill_file)?;
+    let name = extract_skill_name(&raw).unwrap_or_else(|| {
+        skill_dir
+            .file_name()
+            .and_then(|name| name.to_str())
+            .unwrap_or("unnamed")
+            .to_string()
+    });
+    let relative_directory = skill_dir.strip_prefix(extension_dir)?.to_path_buf();
+
+    skills.push(SkillCandidate {
+        name,
+        relative_directory,
+    });
+
+    Ok(())
+}
+
+fn extract_skill_name(raw: &str) -> Option<String> {
+    let (metadata, _): (crate::skills::SkillFrontmatter, String) =
+        crate::sources::parse_frontmatter(raw).ok()??;
+    metadata.name.filter(|name| !name.is_empty())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+
+    #[test]
+    fn installs_gemini_extension_skills() {
+        let install_root = tempfile::tempdir().unwrap();
+        let repo = tempfile::tempdir().unwrap();
+        fs::write(
+            repo.path().join(MANIFEST),
+            r#"{"name":"test-plugin","version":"1.0.0"}"#,
+        )
+        .unwrap();
+        let skill_dir = repo.path().join("skills").join("audit");
+        fs::create_dir_all(&skill_dir).unwrap();
+        fs::write(
+            skill_dir.join("SKILL.md"),
+            "---\nname: audit\ndescription: Audit code\n---\nDo an audit.",
+        )
+        .unwrap();
+
+        let installed = install_from_manifest(
+            "https://example.invalid/repo.git",
+            repo.path(),
+            install_root.path(),
+        )
+        .unwrap();
+
+        assert_eq!(installed.name, "test-plugin");
+        assert_eq!(installed.version, "1.0.0");
+        assert_eq!(installed.skills.len(), 1);
+        assert_eq!(installed.skills[0].name, "audit");
+        assert!(installed.directory.join(MANIFEST).is_file());
+        assert!(installed
+            .directory
+            .join(crate::plugins::INSTALL_METADATA)
+            .is_file());
+        assert_eq!(installed.directory, install_root.path().join("test-plugin"));
+    }
+}
diff --git a/crates/goose/src/plugins/formats/mod.rs b/crates/goose/src/plugins/formats/mod.rs
new file mode 100644
index 00000000..e816fe51
--- /dev/null
+++ b/crates/goose/src/plugins/formats/mod.rs
@@ -0,0 +1 @@
+pub(super) mod gemini;
diff --git a/crates/goose/src/plugins/mod.rs b/crates/goose/src/plugins/mod.rs
new file mode 100644
index 00000000..62f5e760
--- /dev/null
+++ b/crates/goose/src/plugins/mod.rs
@@ -0,0 +1,185 @@
+pub mod formats;
+
+use crate::config::paths::Paths;
+use crate::subprocess::SubprocessExt;
+use anyhow::{anyhow, bail, Result};
+use fs_err as fs;
+use serde::Serialize;
+use std::path::{Path, PathBuf};
+use std::process::Command;
+
+const INSTALL_METADATA: &str = ".goose-plugin-install.json";
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub enum PluginFormat {
+    Gemini,
+}
+
+impl std::fmt::Display for PluginFormat {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        match self {
+            PluginFormat::Gemini => write!(f, "gemini"),
+        }
+    }
+}
+
+#[derive(Debug, Clone)]
+pub struct PluginInstall {
+    pub name: String,
+    pub version: String,
+    pub format: PluginFormat,
+    pub source: String,
+    pub directory: PathBuf,
+    pub skills: Vec<ImportedSkill>,
+}
+
+#[derive(Debug, Clone, PartialEq, Eq)]
+pub struct ImportedSkill {
+    pub name: String,
+    pub directory: PathBuf,
+}
+
+#[derive(Debug, thiserror::Error)]
+#[error("format not supported")]
+pub struct FormatNotSupported;
+
+#[derive(Debug, Serialize)]
+struct InstallMetadata<'a> {
+    source: &'a str,
+    source_type: &'a str,
+    format: &'a str,
+}
+
+pub fn plugin_install_dir() -> PathBuf {
+    Paths::data_dir().join("plugins")
+}
+
+pub fn installed_plugin_skill_dirs() -> Vec<PathBuf> {
+    let plugins_dir = plugin_install_dir();
+    let entries = match fs::read_dir(plugins_dir) {
+        Ok(entries) => entries,
+        Err(_) => return Vec::new(),
+    };
+
+    entries
+        .flatten()
+        .map(|entry| entry.path().join("skills"))
+        .filter(|path| path.is_dir())
+        .collect()
+}
+
+pub fn install_plugin(source: &str) -> Result<PluginInstall> {
+    if source.trim().is_empty() {
+        bail!("Plugin source URL must not be empty");
+    }
+
+    let temp_dir = tempfile::tempdir()?;
+    let checkout_dir = temp_dir.path().join("checkout");
+    clone_git_repo(source, &checkout_dir)?;
+
+    install_from_checkout(source, &checkout_dir)
+}
+
+fn install_from_checkout(source: &str, checkout_dir: &Path) -> Result<PluginInstall> {
+    match formats::gemini::try_install_from_manifest(source, checkout_dir) {
+        Ok(install) => Ok(install),
+        Err(err) if err.is::<FormatNotSupported>() => {
+            bail!("No supported plugin format found")
+        }
+        Err(err) => Err(err),
+    }
+}
+
+fn clone_git_repo(source: &str, destination: &Path) -> Result<()> {
+    let output = Command::new("git")
+        .arg("clone")
+        .arg("--depth")
+        .arg("1")
+        .arg(source)
+        .arg(destination)
+        .set_no_window()
+        .output()
+        .map_err(|e| anyhow!("Failed to run git clone: {e}"))?;
+
+    if !output.status.success() {
+        let stderr = String::from_utf8_lossy(&output.stderr).trim().to_string();
+        let stdout = String::from_utf8_lossy(&output.stdout).trim().to_string();
+        let message = if stderr.is_empty() { stdout } else { stderr };
+        bail!("Failed to clone plugin repository: {message}");
+    }
+
+    Ok(())
+}
+
+fn write_install_metadata(destination: &Path, source: &str, format: &str) -> Result<()> {
+    let metadata = InstallMetadata {
+        source,
+        source_type: "git",
+        format,
+    };
+    fs::write(
+        destination.join(INSTALL_METADATA),
+        serde_json::to_string_pretty(&metadata)?,
+    )?;
+    Ok(())
+}
+
+fn copy_dir_all(source: &Path, destination: &Path) -> Result<()> {
+    fs::create_dir_all(destination)?;
+
+    for entry in fs::read_dir(source)? {
+        let entry = entry?;
+        let source_path = entry.path();
+        let destination_path = destination.join(entry.file_name());
+        let file_type = entry.file_type()?;
+
+        if file_type.is_dir() {
+            copy_dir_all(&source_path, &destination_path)?;
+        } else if file_type.is_file() {
+            fs::copy(&source_path, &destination_path)?;
+        } else if file_type.is_symlink() {
+            copy_symlink(&source_path, &destination_path)?;
+        }
+    }
+
+    Ok(())
+}
+
+#[cfg(unix)]
+fn copy_symlink(source: &Path, destination: &Path) -> Result<()> {
+    std::os::unix::fs::symlink(fs::read_link(source)?, destination)?;
+    Ok(())
+}
+
+#[cfg(windows)]
+fn copy_symlink(source: &Path, destination: &Path) -> Result<()> {
+    let target = fs::read_link(source)?;
+    if source.is_dir() {
+        std::os::windows::fs::symlink_dir(target, destination)?;
+    } else {
+        std::os::windows::fs::symlink_file(target, destination)?;
+    }
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+    use super::*;
+    use std::sync::Mutex;
+
+    static ENV_LOCK: Mutex<()> = Mutex::new(());
+
+    #[test]
+    fn rejects_repo_without_supported_manifest() {
+        let _guard = ENV_LOCK.lock().unwrap();
+        let root = tempfile::tempdir().unwrap();
+        std::env::set_var("GOOSE_PATH_ROOT", root.path());
+        let repo = tempfile::tempdir().unwrap();
+
+        let err =
+            install_from_checkout("https://example.invalid/repo.git", repo.path()).unwrap_err();
+
+        assert!(err.to_string().contains("No supported plugin format found"));
+        std::env::remove_var("GOOSE_PATH_ROOT");
+    }
+}
diff --git a/crates/goose/src/skills/mod.rs b/crates/goose/src/skills/mod.rs
index b337b4e4..ab45646b 100644
--- a/crates/goose/src/skills/mod.rs
+++ b/crates/goose/src/skills/mod.rs
@@ -8,6 +8,7 @@ pub mod client;
 pub use client::{SkillsClient, EXTENSION_NAME};
 
 use crate::config::paths::Paths;
+use crate::plugins::installed_plugin_skill_dirs;
 use crate::sources::parse_frontmatter;
 use goose_sdk::custom_requests::{SourceEntry, SourceType};
 use sacp::Error;
@@ -211,6 +212,12 @@ pub fn all_skill_dirs(working_dir: Option<&Path>) -> Vec<(PathBuf, bool)> {
         dirs.push((h.join(".config").join("agents").join("skills"), true));
     }
 
+    dirs.extend(
+        installed_plugin_skill_dirs()
+            .into_iter()
+            .map(|dir| (dir, true)),
+    );
+
     dirs
 }